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Method and device for power control

A power control and power configuration technology, applied in the electronic field, can solve problems such as small power control range, increased system cost, and small power detection interval

Active Publication Date: 2012-11-07
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the process of realizing the present invention, the inventors found that the geophone is a key device in the closed-loop mode, and its dynamic range determines the power range of the closed-loop controllable power range. Due to the high requirements on the performance of the geophone, the cost of the system is greatly increased
However, if cheap devices such as diodes are used for detection, the power detection range that meets the linearity requirements is too small, and the range of power control is also small.

Method used

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  • Method and device for power control
  • Method and device for power control

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment one, such as figure 2 As shown, a power control method provided by an embodiment of the present invention may include the following content.

[0022] 201. Receive power configuration information.

[0023] 202. If the power configured in the power configuration information exceeds the predetermined power, perform 203. If the power configured in the power configuration information does not exceed the predetermined power, perform 204. If the power configured in the power configuration information is equal to the predetermined power, 203 or 204 may be performed, which is not limited in this embodiment.

[0024] 203. Perform closed-loop power control.

[0025] 204. Perform open-loop power control.

[0026] If the power configured by the power configuration information does not exceed the predetermined power for the first time, before performing open-loop power control, it is also possible to: perform closed-loop power control with predetermined power, and dete...

Embodiment 2

[0031] Embodiment two, such as image 3 As shown, the embodiment of the present invention also provides a power control device, which may include: a power configuration information receiving unit 301 and a power control mode selection unit 302 .

[0032] The power configuration information receiving unit 301 receives the power configuration information; the power control mode selection unit 302 is used to perform closed-loop power control when the power configured by the power configuration information exceeds a predetermined power; if the power configured by the power configuration information does not exceed Predetermined power, then carry out open-loop power control.

[0033] Optionally, the power control device in this embodiment may further include: a calibration judging unit 303 and a parameter calculating unit 304 .

[0034] The calibration judgment unit 303 judges whether the power configured by the power configuration information does not exceed the predetermined pow...

Embodiment 3

[0038] Embodiment 3, in the embodiment of the present invention, the power configuration information will be expressed in the form of power level, such as Figure 4 As shown, where the predetermined power is 15 levels, then 0~15 levels (a total of 16 levels) are greater than the predetermined power and belong to the range of high-power closed-loop control, and above 16 levels are less than the predetermined power and belong to the range of low-power open-loop control. Level 0 with the highest power is 30dBm and the level difference is 2dBm.

[0039] Such as Figure 5 shown, and can be referred to together figure 1 , the operations that can be performed by the power control provided by the embodiments of the present invention and the process of converting power configuration information into control signals, wherein the above control signals are used to transmit control values ​​to control digital-to-analog converters and analog attenuators. The specific power control process...

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PUM

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Abstract

The invention discloses a method and a device for power control. The method of the invention includes the following steps: power configuration information is received; under the circumstance that power configured by the power configuration information exceeds preset power, closed loop power control is carried out; and under the circumstance that the power configured by the power configuration information does not exceed the preset power, opened loop power control is carried out. By setting one preset power, the range of power control is divided into two regions, opened loop power control is carried out on the region with low power, and closed loop power control is carried out on the region with high power; and therefore, the control region of closed loop control is smaller, and a wave detector with lower cost can be used, thereby ensuring the range of power control in the premise of cost control.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power control method and device. Background technique [0002] Both the base station and the mobile terminal in the wireless communication system need to dynamically control the transmission power. For example: when the user equipment (User Equipment, UE) moves in the cell, the transmit power of the base station needs to change with the movement of the UE. The specific change is: when the UE is close to the base station, the base station needs to reduce the Transmit power. When the UE is far away from the base station, the base station needs to increase the transmit power to prevent signal attenuation. [0003] In order to realize power control, the power transmission unit generally adopts an open-loop or closed-loop method to adjust and control the transmission power within a certain range. [0004] In the open loop mode, the power control is one-way open, such as figur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08H04W52/10
CPCY02B60/50
Inventor 刘一麓
Owner SHANGHAI HUAWEI TECH CO LTD